A decently executed work. It's quite repetitive, especially the background music. Not much of a challenge. At level 16, I got a little bored. The ending is surprising, but I don't really feel the connection to the theme.
I have a technical comment. With the endless map, when I reach the edge, I can feel a little jitter on the screen. I suspect the character teleports to the wrong position.
In any case, a neat piece of work. Functional design.